Annulation Videos, Biography, Lyrics

Annulation


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Annulation Biography

Annulation (derived from annular, occasionally annelation) in organic chemistry is a chemical reaction in which a new ring is constructed on another molecule (often another ring). Examples are the Robinson annulation and certain cycloadditions. Annular molecules are constructed from side-on condensed cyclic segments, for example helicenes and acenes. In transannulation a bicyclic molecule is created by intramolecular carbon-carbon bond formation in a large monocyclic ring. An example is the samarium chloride induced ketone - alkene cyclization of 5-methylenecyclooctanone which proceeds through a ketyl intermediate Construction of Bicyclic Ring Systems via a Transannular SmI2-Mediated Ketone-Olefin Cyclization StrategyGary A. Molander, Barbara Czak├│, and Michael Rheam J. Org. Chem.; 2007; 72(5) pp 1755 - 1764; (Article) :

Source: http://en.wikipedia.org/wiki/Annulation
 
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Annulation Lyrics

"Annulation" : Download all the ringtones on your cell
    Nessun brano in archivio per l'artista


 
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